After being told by his mother that he is too old to have an imaginary friend, Mac and Bloo find Foster's Home for Imaginary Friends. It seems like the perfect solution, but there's a little problem...

Mac and Bloo try to adjust to their new situation, but things are not easy for Bloo at Foster's.

Mac races to save Bloo from the sinister scheme of Duchess and his brother.

It’s Madame Foster’s birthday! But when Frankie tries to take a simple trip to the mall, Bloo and the Gang tag along.

There is one door in Foster’s that is never, ever to be opened. Well, that’s too tempting for Bloo...

Mr. Herriman grows frustrated with Bloo's inability to follow the house rules and threatens to evict him.

It’s dinner time and Mac and Bloo can’t manage to find the dining room in Foster’s twisty-turny house. And to make matters worse, Mr. Herriman won’t allow dinner to begin until Bloo arrives.

While conducting interviews for a website, Mac and Bloo get embarrassing footage of Mr. Herriman.

Berry, a new Imaginary Friend in the house, has set her sights on Bloo. Now anything that keeps her away from him must be removed.

Terrence realizes that the only way to get Mac is to create an Imaginary Friend to beat up Bloo.

Bloo is jealous of Wilt getting special attention for the number of abandoned imaginary friends he brings to Foster's, so he tries to rescue an imaginary friend too.

When Eduardo finds a puppy, he must keep it a secret due to Mr. Herriman’s strict rule of “No Dogs in the House.”

Adopt-a-thought Saturday is a great day when Imaginary Friends try to get adopted by new families. But to Mac and Bloo, it is a dark day when their good friends are taken away from them, so they turn to some drastic measures.

After watching a scary movie, Wilt, Eduardo, and Coco begin to believe that the ghost is real. Meanwhile, Frankie gets locked out of the house in the rain.